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Belle II Document Server

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661.	Search for e+e− → µ+µ− Z'(Z' → Invisible) in the first data of the Belle II experiment / Luigi Corona ; Francesco Forti [BELLE2-MTHESIS-2022-018] Presented on 26 10 2018 MSc 2018 University of Pisa / Pisa The purpose of this thesis is to investigate the production of a light dark gauge boson Z' in association with a muon pair in electron-positron annihilation at the center of mass energy of 10.58 GeV. [...] Fulltext: PDF; Detailed record - Similar records
662.	Improved Selective Background Monte Carlo Simulation at Belle II with Graph Attention Networks and Weighted Events / Boyang Yu ; Thomas Kuhr ; Nikolai Hartmann [BELLE2-MTHESIS-2022-017] Presented on 14 09 2021 MSc 2021 LMU Munich / Munich, Germany When measuring rare processes such as B → K(∗)νν¯ or B → lνγ, a huge luminosity is required, which means a large number of simulations are necessary to determine signal efficiencies and background contributions. [...] Fulltext: PDF; Detailed record - Similar records
663.	Feasibility study of dark-photon searches in the single photon plus missing events in e+e- collisions at Belle II. / Ayumi Yabuuchi ; Hisaki Hayashii [BELLE2-MTHESIS-2022-016] Presented on 28 02 2020 MSc 2020 Nara Women's University / Nara, japan We carried out the feasibility study of the dark-photon searches for events where only a single photon is detected, using signal and background Monte-Carlo simulation. [...] Fulltext: PDF; Detailed record - Similar records
664.	Measurement of the pion transition form factor in the single-tag one-pion production process e+e--> e (e) pi^0. / Mirey Aoyama ; Hisaki Hayashii [BELLE2-MTHESIS-2022-015] Presented on 20 02 2021 MSc 2021 Nara Women's University / Nara, Japan This thesis reports the results of the feasibility study of the one-pion production in the single-tag two-photon processes in the e+e- collisions at Belle II [...] Fulltext: PDF; Detailed record - Similar records
665.	Lepton flvour and number violation measurements at Belle II / Justine Serrano [BELLE2-TALK-CONF-2022-110] 06 September 2022 / BLV2022 This talk presents the results and prospects regarding Belle II LFV and LNV measurements, as well as some recent results on dark sector searches.. Fulltext: PDF; Detailed record - Similar records
666.	Search for the visible ττ decay of a Z′ dark boson in µµττ final state with Belle II / Luigi Corona ; Francesco Forti ; Katsuro Nakamura [BELLE2-PTHESIS-2022-007] Presented on 18 07 2022 PhD 2022 University of Pisa / Pisa In this thesis we investigate the possibility of detecting these new particles in the mass range 3.6-10 GeV/c2 through their decays in a τ+τ− pair in e+e− → µ+µ−τ+τ− events. [...] Fulltext: PDF; Detailed record - Similar records
667.	Full Event Interpretation using Graph Neural Networks / Lea Reuter ; Torben Ferber ; Günter Quast ; James Kahn ; et al [BELLE2-MTHESIS-2022-014] Presented on 17 02 2022 MSc 2022 Institute of Experimental Particle Physics / Karlsruhe The expected large dataset of the Belle~II experiment will enable precise measurements of rare decays to probe the Standard Model and searches for new physics. [...] Fulltext: PDF; Detailed record - Similar records
668.	Sensitivity Study in the Search for $B^{\pm}\to K^{\pm}a$ (displaced $a\to\gamma\gamma$) Decays at Belle II / Alexander Heidelbach ; Prof. Dr. Torben Ferber ; Prof. Dr. Günter Quast [BELLE2-MTHESIS-2022-013] Presented on 28 04 2022 MSc 2022 Institute of Experimental Particle Physics / Karlsruhe In a set of simple extensions of the Standard Model, Axion Like Particles (ALPs) arise as pseudo Nambu-Goldstone bosons of theories with a spontaneously broken Peccei-Quinn symmetry that is anomalous under the Standard Model gauge symmetry. [...] Fulltext: PDF; Detailed record - Similar records
669.	Systematic Studies on Track Reconstruction Efficiency at Belle II / Martin Sobotzik ; Wolfgang Gradl [BELLE2-MTHESIS-2022-012] Presented on 03 12 2019 MSc 2019 Institute for Nuclear Physics / Mainz This thesis provides a detailed overview on the electron and positron tracking efficiency of the Belle II detector. [...] Fulltext: PDF; Detailed record - Similar records
670.	Measurement of decay-time dependent CP violation in B0 → KS0KS0KS0 using 2019--2021 Belle II data / Hikaru Tanigawa ; Yutaka Ushiroda ; Kazutaka Sumisawa ; Koji Hara [BELLE2-CONF-PH-2022-007] 14 September 2022 We report a measurement of decay-time dependent CP-violating parameters in B0 → KS0KS0KS0 decays. [...] Fulltext: PDF; Detailed record - Similar records

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